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Finding the Fourth Proportional to 19,407, 26,781.66 and 11,025.12

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Solution

The fourth proportional to 19,407, 26,781.66 and 11,025.12 is: 15,214.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,407 : 26,781.66 = 11,025.12 : x
  2. Step 2: Convert to fraction form
    19,407/26,781.66 = 11,025.12/x
  3. Step 3: Cross multiply
    19,407x = 26,781.66 × 11,025.12
  4. Step 4: Simplify right side
    19,407x = 295,271,015.30
  5. Step 5: Solve for x
    x = 295,271,015.30/19,407
  6. Step 6: Final answer
    x = 15,214.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.